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(No Model.) 2 S1188b88h86t 1.

O. A. HUSSEY. BRUSH HOLDER FOR ELECTRIC MOTORS 0R DYNAMO ELECTRIC MACHINES. No. 471,819. Patented Mar. 29,1892.

(No Model.) 2 Sheets-Sheet 2.

G. A. HUSSEY, BRUSH HOLDER-FOR ELECTRIC MOTORS OR DYNAMO ELECTRIC MA\GHINES.. No. 471,819. Patented Mar. 29, 1892.?

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, 4 7 I M MALI)? UNITED STATES PATENT ()EEIcE.

CHARLES A. IIUSSEY, OF NElV YORK, N. Y.

BRUSH-HOLDER FOR ELECTRIC MOTORS 0R DYNAMO-ELECTRIC MACHINES.

SPECIFICATION forming part of Letters Patent No. 471,819, dated March 29, 1892.

Application filed May 6, 1889. Serial No. 309,784. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES A. HUSSEY, of New York, in the county and State of New York, have invented a certain new and useful Improvement in Electric Motors and D ynaino- Electric Machines, of which the following is a specification.

I will describe a motor embodying my improvement and then point out the novel features in the claim.

In the accompanying drawings, Figure I is a top view of a motor and dynamo electric machine embodying my improvement. Fig. 2 is an end view of the same. Fig. 3 is an enlarged top view of one of the brushes. Fig. i is a side view thereof. Fig. 5 is an end view of the same. Fig. 6 is a plan of a brush and appurtenances somewhat modified. Fig. 7 is an end view.

Similar letters of reference designate corresponding parts in allthe figures.

A A A designate the field-magnet of the machine. It consists, essentially, of a main portion A and two smaller portions A A the latter being connected to the main portion by connecting-pieces a, and having at their opposite extremities pole-pieces a (6 between which the armature B rotates. The cores of the portions A A A are secured to the connecting-pieces a in any desirable manner. In the present instance the connecting-pieces 64' extend past the ends of the core of the main portion A, and the cores of the portions A A are extended over the top of the connecting-pieces. Screws a passing through the contiguous parts unite them.

The field-magnet may be secured to any suitable base-pieceas, for example, the basepieee C of wood or other suitable material.

B represents the armature having journals b 19 A commutatonwheel B is fastened to one of the journals of the armature-core. The commutator-brushes 13 B are secured to an oscillating bar B which is mounted on a neck or flange belonging to the adjacent bracket A and which may be oscillated to adjust the brushes.

I will now call attention to certain novel features in the brushes illustrated by Figs. 3, 4, and 5. The brush consists, essentially, of a strip of carbon 0', fitted in a socket r. This socket consists, essentially, of a plate having a loop. The strip of carbon fits between the plate and the loop. The loop is provided with a clamping-screw r for holding the carbon strip. The socket may be cast of any suitable metal. It is attached by solder or otherwise to a metal spring 1' This spring is shown as fitting in an ordinary brush-holder r. This holder is secured to the bar 13'. The spring 1' enables the carbon strip to act with a yielding pressure upon the commutatorwheel.

In Figs. 6 and '7 I have shown a carbon strip 7" inserted directly in a brush-holder T In this case the brush-holder r" is supported in the bar B, so as to be free to rotate, and has affixed to its outer end an arm This arm 4' is connected to a spring 0* and the latter is fastened to a string which is wound upon a Windlass a, which is inserted in the bar B, and can be rotated to wind or unwind the string to put more or less tension upon the spring. The windlass r fits tightly in the bar B so that it will be held in position when adjusted. It will be seen that the carbon strip in this instance, as well as in the other example of this brush improvement, is made to bear with a yielding pressure upon the commutator-wheel.

What I claim as my invention, and desire to secure by Letters Patent, is

The combination, with an electric motor or dynamo-electric machine, of the brush-holder supported and rotating in the bar 13, an arm 0' on said brush-holder, a spring 0*, connected to the arm, a Windlass 0' inserted in the bar 13", a connection between the spring and windlass, and a carbon strip inserted in the brushholder, substantially as specified.

CHARLES A. I'IUSSEY.

Witnesses:

EDWIN II. BROWN, E. PHILLIPS. 

